Posted by Jay on .
The area of a rectangle is 20 square inches. The length of the rectangle is 1 inch longer than the width. What are the length and width of the rectangle?

Math 
Reiny,
width  x
length  x+1
x(x+1) = 20
x^2 + x  20 = 0
(x+5)(x4) = 0
x = 4 or a silly answer of x = 5
width is 4, length is 5 
Identify Equivalent Expressions: Distributive Property 
Anonymous,
Janice plans to build a rectangular table top with an area of 60+20r square inches. The width of the table top is 10 inches as shown in the following diagram.